AMMONIA COMES UNDER THE SPOTLIGHT AS A POTENTIAL NEW LOW EMISSIONS FUEL


Ammonia can be safely and effectively applied as a marine fuel to reduce harmful emissions according to new research published by C-Job Naval Architects.


The ground-breaking research uses a new concept design, an ammonia carrier fuelled by its own cargo, to study the concept of using ammonia as a marine fuel and achieve a significant reduction in greenhouse gas emissions in shipping. It shows ammonia can be used as marine fuel if a number of safety measures are included in the design.


Niels de Vries, Lead Naval Architect at C-Job Naval Architects and research lead, said: “Reviewing all ammonia power generation options, the Solid Oxide Fuel Cell (SOFC) is clearly the most efficient. However, it does have practical challenges as the power density and load response capability are not on an acceptable level yet. “Therefore, in the short term applying the internal combustion engine is the way to go.”


With the International Maritime Organisation goals to reduce total annual GHG emissions by at least 50% by 2050 compared to 2008 and eventually fully eliminate harmful emissions, it is of the utmost importance that the global maritime industry looks into renewable fuels like hydrogen, ammonia and methanol.


DNV GL HAS PUBLISHED UPDATED BULK CARGO LIQUEFACTION GUIDANCE INFORMATION


DNV GL Classification society has updated its bulk cargo liquefaction guidelines. Originally published in 2015, the revised guidelines are based on feedback from readers and practical experiences that have arisen historically. The guidelines focus on design and operation of vessels with bulk cargoes that may liquefy.


Specifically, the revised guidelines provide additional material to better describe precautions to be followed during voyages or even the steps to be taken in the possibility of cargo liquefaction.


According to DNV GL, two new paragraphs have been added: 5.8 and 5.9. In addition, parts 4 and 6 have been updated to include the latest developments, including DNV GL’s new class notation BCLIQ. We welcome your feedback on these new revisions.


Concerning the BCLIQ notation was launched in 2018, and reassures that a vessel is constructed to eliminate the free-surface effect, for example by featuring wide wing tanks and reinforced structural focus areas on the cargo hold side walls, and is consequently able to carry cargoes with a moisture content exceeding the transportable moisture limit (TML).


Download the guidance booklet at https://bit.ly/2JbGFbJ.


14 | The Report • September 2019 • Issue 89


Marine News


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